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INameSpaceTreeControlEvents::OnBeforeExpand method (shobjidl.h)

Called before an IShellItem is expanded.

Syntax

HRESULT OnBeforeExpand(
  [in] IShellItem *psi
);

Parameters

[in] psi

Type: IShellItem*

A pointer to the IShellItem that is to be expanded.

Return value

Type: HRESULT

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header shobjidl.h

See also

INameSpaceTreeControlEvents

IShellItem